tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Kprobe dynamic event - probing module
   4
   5 [ -f kprobe_events ] || exit_unsupported # this is configurable
   6
   7 disable_events
   8 echo > kprobe_events
   9
  10 :;: "Add an event on a module function without specifying event name" ;:
  11
  12 MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "`
  13 FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "`
  14 [ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_unresolved
  15 echo "p $MOD:$FUNC" > kprobe_events
  16 PROBE_NAME=`echo $MOD:$FUNC | tr ".:" "_"`
  17 test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure
  18
  19 :;: "Add an event on a module function with new event name" ;:
  20
  21 echo "p:event1 $MOD:$FUNC" > kprobe_events
  22 test -d events/kprobes/event1 || exit_failure
  23
  24 :;: "Add an event on a module function with new event and group name" ;:
  25
  26 echo "p:kprobes1/event1 $MOD:$FUNC" > kprobe_events
  27 test -d events/kprobes1/event1 || exit_failure
  28
  29 echo > kprobe_events